Merced River Flow to Floodplain Habitat Area Relationship

A dataset containing the floodplain habitat area in acres as a function of flow in cubic feet per second

merced_river_floodplain

Format

dataframe with 22 rows and 3 variables:

flow_cfs

integer flow value in cubic feet per second

floodplain_acres

fall run floodplain acreage (use for Steelhead when required)

watershed

name of watershed

Source

Central Valley Floodplain Evaluation and Delineation (CVFED) HEC-RAS hydraulic model

Fall Run and Steelhead Modeling

A 25.50 mile portion of the entire mapped rearing extent of 51.76 miles was modeled using Central Valley Floodplain Evaluation and Delineation (CVFED) HEC-RAS hydraulic model. Of the entire mapped rearing extent, 34.60 miles were classified as low gradient and 17.16 miles were classified as high gradient based on a geomorphic analysis. Floodplain area per unit length was determined for the modeled extent and applied to determine areas for the non-modeled extent. A scaling factor of 0.1 was applied to the area per unit length for the high gradient extent. No scaling factor was applied to the low gradient extent.

Examples

merced_river_floodplain
#>    flow_cfs FR_floodplain_acres ST_floodplain_acres    watershed
#> 1       250             0.00000             0.00000 Merced River
#> 2       500             0.00000             0.00000 Merced River
#> 3       750             0.00000             0.00000 Merced River
#> 4      1000             0.00000             0.00000 Merced River
#> 5      1250             0.00000             0.00000 Merced River
#> 6      1500            13.90466            13.90466 Merced River
#> 7      1750            50.29351            50.29351 Merced River
#> 8      2000            87.16924            87.16924 Merced River
#> 9      2500           175.95618           175.95618 Merced River
#> 10     3000           269.50750           269.50750 Merced River
#> 11     3500           366.18343           366.18343 Merced River
#> 12     4000           451.35417           451.35417 Merced River
#> 13     4500           566.18245           566.18245 Merced River
#> 14     5000           668.31956           668.31956 Merced River
#> 15     5500           820.58655           820.58655 Merced River
#> 16     6000          1077.80458          1077.80458 Merced River
#> 17     6500          1324.35164          1324.35164 Merced River
#> 18     7000          1558.20052          1558.20052 Merced River
#> 19     7500          2105.07593          2105.07593 Merced River
#> 20     8000          2609.26051          2609.26051 Merced River
#> 21     8500          3097.47511          3097.47511 Merced River
#> 22     9000          3516.89583          3516.89583 Merced River